The Wand turntable

@lewm I understand your comment. I know Sumiko BP2 is a medium-quality cartridge, but I like it and beside I have optimized it with Aqvox prephono and phono cables, so I am tihinking to change turntable but not the whole analog setup. 

Aqvox is very very good, by all accounts.  What's more, isn't it one of the current-drive phono stages?  If so, it would probably perform closer to its max if you used a lower impedance cartridge to drive it. I just looked up the specs of the BP2; internal impedance is 135 ohms. I also just nowrefreshed my memory of the Aqvox.  Apparently you have the choice of using its RCA inputs to a standard 47K ohm load resistance. Perhaps that is what you are doing with the BP2, but it also offers balanced inputs with current drive (i.e., best suited to low internal impedance LOMC cartridges).  At some point, you ought to consider acquiring a suitable LOMC cartridge with an internal impedance of <20 ohms, so you can take full advantage of that phono stage.  Sorry, once again, if I sound overbearing. Just advice for future.  

@lewm I am using XLR inputs of Aqvox so it works as current-drive.
Before Aqvox, BP2 was connected to an IFI-iPhono and with Aqvox I have got  more dynamic sound.
I like Sumiko sound, so I could replace the BP2 with a Super Evo III low output which has 28ohm internal impedance. 
Do you think the lowest internal impedance would sound better with Aqvox?

The Michell arms are I believe Rega arms certainly the Technoarm 2 and the similar looking T2, modified by Michell for VTA adjustment. The Michell turntable accepts many of the arms available to-day, you just have to buy the approriate "armboard". John Michell's preference was for SME - he used an SME V at Hi-fi shows, as do Proac Speakers with an Orbe SE.

@lewm It's understandable that folks often think that you must have a very high end cartridge to justify a high end arm.  When I first heard a Basik cartridge on a Linn, I was blown away.  Much more so when I discovered  the cartridge was essentially an Audio Technica entry level unit I had installed and heard many times.  If anything, the arm (and turntable is where the money should go first.